EEG and human orgasm

bill at nsma.arizona.edu (Bill Skaggs) writes:
>MfZ at contrib.de (Museum fuer Zukunft) writes:
> > I try to find literature which report experiments in which the
> > brainwaves during human orgasms are recorded with an EEG-meter.
>One of the most fascinating papers I have ever read is "Pleasure and
>brain activity in man: deep and surface electroencephalograms during
>orgasm", by R. G. Heath, J Nervous and Mental Disease 154:3-17
>(1972). More recent studies exist, of course, but surprisingly few of
>them, and they aren't nearly as interesting. This is a topic that has
>drawn very little attention relative to its importance.
> -- Bill
By "deep electroencephalograms", did they mean they were recording
intracranially? This sounds quite bizarre to me. And regardless of
whether they were recording from inside the scalp or the surface, I
think that there would be a lot of muscle and movement artifacts in
the EEG recordings.
Kevin